What is Sentinel?

Sentinel is a command line tool able to protect Windows 32 bit programs against exploits targeted by attackers or viruses. It can protect your programs against 0-day attacks or publicly known bugs.

Why Sentinel?

When a 0-day attack is used in the wild, nobody knows about the existence of this bug except the attacker himself. Some antiviruses implement heuristics to detect new attacks but usually they are unreliable. Sometimes, your computer is not up to date, in this case you are vulnerable to attacks against public bugs.

In both cases, one way to protect your "vulnerable programs" against old or new attacks is adding extra protections (usually, exploit mitigations).